{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["cause effect", "else", "instrument agency", "member collection"], "input": "the earth 's thin , rocky crust is composed of silicon , aluminum , calcium , sodium and potassium ."}
{"cause effect": [], "else": [{"subject": "crust", "object": "silicon"}], "instrument agency": [], "member collection": []}